🫘 CKD Staging & Referral (KDIGO)
KDIGO heat-map risk stratification (eGFR stage × albuminuria stage), follow-up frequency and nephrology referral advice for CKD. Instant, browser-side.
Refer to nephrology for eGFR < 30, A3 albuminuria or very-high risk.
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When to use
Stage CKD and decide on follow-up intensity and referral; the diagnosis requires abnormalities to persist ≥ 3 months.
How it works
eGFR stages G1–G5 × albuminuria A1 (< 30), A2 (30–300), A3 (> 300 mg/g) → low/moderate/high/very-high risk per the KDIGO grid.
Key points
- Refer to nephrology for eGFR < 30, A3 albuminuria or very-high risk.
- Also refer for rapidly falling eGFR, resistant hypertension or unexplained anaemia.
- CKD requires abnormalities to persist ≥ 3 months.
- G1–G2 with A1 needs another marker of kidney damage to diagnose CKD.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| eGFR | 45 mL/min/1.73m² |
|---|---|
| Urine albumin/creatinine ratio (ACR) | 250 mg/g |
→CKD risk stratumHigh risk
- Stage：G3a A2
- eGFR stage：G3a (45–59)
- Albuminuria stage：A2 (30–300 mg/g)
Frequently asked questions
- What is CKD Staging & Referral (KDIGO)?
- KDIGO heat-map risk stratification (eGFR stage × albuminuria stage), follow-up frequency and nephrology referral advice for CKD. Instant, browser-side.
- How is CKD Staging & Referral (KDIGO) calculated? What is the core formula?
- eGFR stages G1–G5 × albuminuria A1 (< 30), A2 (30–300), A3 (> 300 mg/g) → low/moderate/high/very-high risk per the KDIGO grid.
- When is CKD Staging & Referral (KDIGO) used?
- Stage CKD and decide on follow-up intensity and referral; the diagnosis requires abnormalities to persist ≥ 3 months.
- What are the key clinical points for CKD Staging & Referral (KDIGO)?
- Refer to nephrology for eGFR < 30, A3 albuminuria or very-high risk. Also refer for rapidly falling eGFR, resistant hypertension or unexplained anaemia. CKD requires abnormalities to persist ≥ 3 months. G1–G2 with A1 needs another marker of kidney damage to diagnose CKD.
- What are the limits and cautions when using CKD Staging & Referral (KDIGO)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is CKD Staging & Referral (KDIGO) calculated in practice? Can you show a worked example?
- Inputs: eGFR 45 mL/min/1.73m², Urine albumin/creatinine ratio (ACR) 250 mg/g → Result: CKD risk stratum High risk（Stage: G3a A2, eGFR stage: G3a (45–59), Albuminuria stage: A2 (30–300 mg/g)）